Well think about it. If the planets were weaker, than a noob would be able to kill your home world and take all your outpost wile you are sleeping!
And it could of been done on like a
Second day after a server launch.
I think the system is pretty well balanced, we just need to understand it better
But Jet, if you are looking to destroy planets, you should consider Bering a warlord. They get really strong ships. You'd probably only need 2 or 3 to wipe out a colony in 1 shot.
Not to mansion the planet killer ship that can kill a planet in 1 shot from across the sector!!!